mDNSShared/dnsextd_lexer.l

   1 /* -*- Mode: C; tab-width: 4 -*-
   2  *
   3  * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16
  17     Change History (most recent first):
  18
  19 $Log: dnsextd_lexer.l,v $
  20 Revision 1.6  2008/07/18 17:40:46  cheshire
  21 Removed redundant definition of "YY_NO_UNPUT" (not needed now that we use "%option nounput" instead)
  22
  23 Revision 1.5  2008/06/24 18:32:26  mcguire
  24 <rdar://problem/6024542> flex producing .c files that result in warnings
  25
  26 Revision 1.4  2007/05/25 20:01:43  cheshire
  27 <rdar://problem/5226767> /usr/bin/flex failures prevent mDNSResponder from building
  28 Only define "int yylineno" on flex 2.5.4 and earlier
  29
  30 Revision 1.3  2006/08/14 23:24:56  cheshire
  31 Re-licensed mDNSResponder daemon source code under Apache License, Version 2.0
  32
  33 Revision 1.2  2006/07/06 20:41:14  cheshire
  34 <rdar://problem/4472013> Add Private DNS server functionality to dnsextd
  35 Use derived filename "dnsextd_parser.h" instead of "dnsextd_parser.y.h"
  36
  37 Revision 1.1  2006/07/06 00:09:05  cheshire
  38 <rdar://problem/4472013> Add Private DNS server functionality to dnsextd
  39
  40  */
  41
  42 %{
  43 #include <string.h>
  44 #include <stdio.h>
  45 #include "dnsextd_parser.h"
  46
  47
  48 extern YYSTYPE yylval;
  49
  50 /* Mac OS X 10.4 has flex version 2.5.4, which doesn't define yylineno for us */
  51 /* Mac OS X 10.5 has flex version 2.5.33, which does define yylineno          */
  52 #if YY_FLEX_MAJOR_VERSION <= 2 && YY_FLEX_MINOR_VERSION <= 5 && YY_FLEX_SUBMINOR_VERSION <= 4
  53 int yylineno = 1;
  54 #endif
  55
  56 int  yylex(void);
  57
  58 static char*
  59 StripQuotes
  60         (
  61         const char * string
  62         )
  63 {
  64         char * dup;
  65
  66         dup = strdup( string + 1);
  67
  68         dup[ strlen( dup ) - 1 ] = '\0';
  69
  70         return dup;
  71 }
  72
  73
  74 %}
  75
  76 %option nounput
  77 %%
  78
  79 options                                                         return OPTIONS;
  80 listen-on                                                       return LISTEN_ON;
  81 nameserver                                                      return NAMESERVER;
  82 port                                                            return PORT;
  83 address                                                         return ADDRESS;
  84 llq                                                                     return LLQ;
  85 public                                                          return PUBLIC;
  86 private                                                         return PRIVATE;
  87 key                                                                     return KEY;
  88 allow-update                                            return ALLOWUPDATE;
  89 allow-query                                                     return ALLOWQUERY;
  90 algorithm                                                       return ALGORITHM;
  91 secret                                                          return SECRET;
  92 zone                                            return ZONE;
  93 type                                            return TYPE;
  94 allow                                                           return ALLOW;
  95 \{                                              return OBRACE;
  96 \}                                              return EBRACE;
  97 ;                                               return SEMICOLON;
  98 IN                                                                      return IN;
  99 \*                                                                      yylval.string = strdup(yytext); return WILDCARD;
 100 [0-9]+\.[0-9]+\.[0-9]+\.[0-9]+          yylval.string = strdup(yytext); return DOTTED_DECIMAL_ADDRESS;
 101 [0123456789]+                                           yylval.number = atoi(yytext);   return NUMBER;
 102 [a-zA-Z0-9]+(\.[a-zA-Z0-9]+)*           yylval.string = strdup(yytext); return HOSTNAME;
 103 [a-zA-Z0-9\.]+([a-zA-Z0-9\.]+)*         yylval.string = strdup(yytext); return DOMAINNAME;
 104 \"([^"\\\r\n]*(\\.[^"\\\r\n]*)*)\"      yylval.string = StripQuotes(yytext);    return QUOTEDSTRING;
 105 [\/][\/].*                                                      /* ignore C++ style comments */;
 106 \n                                              yylineno++; /* ignore EOL */;
 107 [ \t]+                                          /* ignore whitespace */;
 108 %%